 \textit{Panel A: Output elasticities }    &  \multicolumn{2}{c}{Labor}   &  \multicolumn{2}{c}{Materials}     &  \multicolumn{2}{c}{Capital}     \\     
                    &\multicolumn{1}{c}{Est.}&\multicolumn{1}{c}{S.E.}&\multicolumn{1}{c}{Est.}&\multicolumn{1}{c}{S.E.}&\multicolumn{1}{c}{Est.}&\multicolumn{1}{c}{S.E.}\\
 \hline   &&\\   
Perfect collusion   &       0.722&       0.030&       0.203&       0.027&       0.075&       0.011\\
\addlinespace
No collusion        &       0.653&       0.029&       0.256&       0.025&       0.091&       0.013\\
  &&\\      \hline  
 \textit{Panel B: Markup }    &  \multicolumn{2}{c}{Markup}      \\     
                    &\multicolumn{1}{c}{Est.}&\multicolumn{1}{c}{S.E.}\\
 \hline   &&\\   
Perfect collusion   &       0.614&       0.034\\
\addlinespace
No collusion        &       0.806&       0.078\\
  &&\\   \hline     
